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Galvanic displacement of Co with Rh boosts hydrogen and oxygen evolution reactions in alkaline media. J Solid State Electrochem 2023. [DOI: 10.1007/s10008-023-05374-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Schalenbach M, Durmus YE, Tempel H, Kungl H, Eichel RA. The role of the double layer for the pseudocapacitance of the hydrogen adsorption on platinum. Sci Rep 2022; 12:3375. [PMID: 35233048 PMCID: PMC8888654 DOI: 10.1038/s41598-022-07411-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 02/16/2022] [Indexed: 11/09/2022] Open
Abstract
Pseudocapacitances such as the hydrogen adsorption on platinum (HAoPt) are associated with faradaic chemical processes that appear as capacitive in their potentiodynamic response, which was reported to result from the kinetics of adsorption processes. This study discusses an alternative interpretation of the partly capacitive response of the HAoPt that is based on the proton transport of ad- or desorbed hydrogen in the double layer. Potentiodynamic perturbations of equilibrated surface states of the HAoPt lead to typical double layer responses with the characteristic resistive–capacitive relaxations that overshadow the fast adsorption kinetics. A potential-dependent double layer representation by a dynamic transmission line model incorporates the HAoPt in terms of capacitive contributions and can computationally reconstruct the charge exchanged in full range cyclic voltammetry data. The coupling of charge transfer with double layer dynamics displays a novel physicochemical theory to explain the phenomenon of pseudocapacitance and the mechanisms in thereon based supercapacitors.
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Affiliation(s)
- Maximilian Schalenbach
- Fundamental Electrochemistry (IEK‑9), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany.
| | - Y Emre Durmus
- Fundamental Electrochemistry (IEK‑9), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Hermann Tempel
- Fundamental Electrochemistry (IEK‑9), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Hans Kungl
- Fundamental Electrochemistry (IEK‑9), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
| | - Rüdiger-A Eichel
- Fundamental Electrochemistry (IEK‑9), Institute of Energy and Climate Research, Forschungszentrum Jülich GmbH, 52425, Jülich, Germany
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Martínez-Alonso C, Guevara-Vela JM, LLorca J. Understanding the effect of mechanical strains on the catalytic activity of transition metals. Phys Chem Chem Phys 2022; 24:4832-4842. [PMID: 35156676 DOI: 10.1039/d1cp05436h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
The effect of elastic strains on the catalytic activity for the hydrogen evolution reaction (HER) and the oxygen reduction reaction (ORR) was analyzed on thirteen late transition metals: eight (111) surfaces of fcc metals (Ni, Cu, Pd, Ag, Pt, Au, Rh, Ir) and five (0001) surfaces of hcp metals (Co, Zn, Cd, Ru, and Os). The corresponding adsorption energies for the different intermediate reactions up to strains dictated by the mechanical stability limits were previously obtained by means of density functional theory calculations. It was found that the elastic strains can be used to tune the catalytic activity of different metals by reducing the energy barrier of the rate limiting step and even to reach the cusp of the volcano plot. The largest changes in catalytic activity with strain for the HER were found in Pt, Au, and Ir while Co and Ni were very insensitive to this strategy. In the case of the ORR, the catalytic activity of Au could be enhanced by the application of tensile strains while that of Cu, Ni, Pt, Pd, Rh, Co, Ru, and Os was improved by the application of compressive strains. However, the catalytic activity of Ir was rather insensitive to mechanical deformations. Elastic strains were able to modify the rate limiting reaction in Au, Pt, Ag, and Os and it was possible to achieve the cusp of the volcano plot in these metals. Final, mechanical instabilities were attained at small strains in Zn and Cd, which did not lead to significant changes in the catalytic activity for the HER and the ORR. These results provide a framework to systematically investigate the application of elastic strains in the design of new catalysts.
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Affiliation(s)
- Carmen Martínez-Alonso
- IMDEA Materials Institute, C/Eric Kandel 2, 28906 - Getafe, Madrid, Spain. .,Department of Inorganic Chemistry, Complutense University of Madrid, 28040 Madrid, Spain
| | - José Manuel Guevara-Vela
- Department of Materials Science, Polytechnic University of Madrid, E. T. S. de Ingenieros de Caminos, 28040 Madrid, Spain.
| | - Javier LLorca
- IMDEA Materials Institute, C/Eric Kandel 2, 28906 - Getafe, Madrid, Spain. .,Department of Materials Science, Polytechnic University of Madrid, E. T. S. de Ingenieros de Caminos, 28040 Madrid, Spain.
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Farkaš B, Terranova U, de Leeuw NH. The mechanism underlying the functionalisation of cobalt nanoparticles by carboxylic acids: a first-principles computational study. J Mater Chem B 2021; 9:4915-4928. [PMID: 34100480 DOI: 10.1039/d0tb02928a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The promise of biocompatible magnetic nanoparticles with high magnetic saturation in the implementation as drug carriers and hyperthermia agents has generated significant interest in functionalised cobalt nanoparticles. Carboxylic acid coatings on metallic nanoparticles have been shown as an attractive option owing to their respectable stability and biocompatibility. However, only limited information is available on the molecular mechanism leading to the formation of such protective coatings. In this study, ab initio molecular dynamics simulations have been used to unravel the functionalisation mechanism starting from a neutral cobalt cluster and valeric acid molecules. Three stages were detected in the coating process: (i) rapid initial adsorption of acid molecules, (ii) simultaneous adsorption of new molecules and dissociation of those already interacting with the cluster, and, finally, (iii) grouping of dissociated hydrogen atoms and subsequent desorption of acid molecules. The fate of the hydrogen atoms was probed through a combination of static and dynamic ab initio modelling approaches, which predicted H2 generation with favourable energetics. A better understanding of the functionalisation and interaction mechanisms will aid the rational design of biocompatible cobalt nanoparticles for various applications.
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Affiliation(s)
- Barbara Farkaš
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK
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Wang N, Cao P, Sun S, Ma H, Lin M. Hollow Multiple Noble Metallic Nanoalloys by Mercury-Assisted Galvanic Replacement Reaction for Hydrogen Evolution. Inorg Chem 2021; 60:3471-3478. [PMID: 33591166 DOI: 10.1021/acs.inorgchem.1c00247] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hollow multimetallic noble nanoalloys with high surface area/volume ratio, abundant active sites, and relatively effective catalytic activity have attracted considerable research interest. Traditional noble nanoalloys fabricated by hydro-/solvothermal methods usually involve harsh synthetic conditions such as high temperatures and intricate processing. We proposed a simple and mild strategy to synthesize platinum- and palladium-decorated hollow gold-based nanoalloys by the galvanic replacement reaction (GRR) at room temperature using hollow gold nanoparticles as templates and mercury as an intermediate. The hollow gold nanoparticles were essential for increasing the number of surface-active sites of the obtained multimetallic nanoalloys, and the introduction of mercury can eliminate the influence of the electrochemical potential of Pt/Pd with Au in the GRRs, increase alloying degrees, and maintain the nanoalloys that exhibit the hollow nanostructures. The structural characterizations of the hollow nanoalloys were studied by means of high-angle annular dark-field scanning transmission electron microscopy, X-ray photoelectron spectroscopy, and X-ray diffraction. On the basis of the electrochemical catalytic measurements, the platinum-exposed nanoalloys were found to have excellent electrocatalytic activities. Especially in the presence of palladium, owing to the synergistic effect, the quaternary AuHgPdPt hollow nanoalloy displayed a low overpotential of 38 mV at 10 mA cm-2 with a small Tafel slope of 56.23 mV dec-1 for the alkaline hydrogen evolution reaction. In addition, this approach not only expands the application range of the galvanic replacement reaction but also provides new ideas for the preparation of multialloys and even high-entropy alloys at room temperature.
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Affiliation(s)
- Nan Wang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Pengfei Cao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Shengjun Sun
- Shandong Provincial Key Laboratory of Oral Biomedicine, College of Stomatology, Shandong University, Jinan 250021, China
| | - Houyi Ma
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Meng Lin
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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Koverga AA, Flórez E, Jimenez-Orozco C, Rodriguez JA. Not all platinum surfaces are the same: Effect of the support on fundamental properties of platinum adlayer and its implications for the activity toward hydrogen evolution reaction. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2020.137598] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Ipadeola AK, Ozoemena KI. Alkaline water-splitting reactions over Pd/Co-MOF-derived carbon obtained via microwave-assisted synthesis. RSC Adv 2020; 10:17359-17368. [PMID: 35521459 PMCID: PMC9053437 DOI: 10.1039/d0ra02307h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Accepted: 04/24/2020] [Indexed: 11/21/2022] Open
Abstract
Cobalt-based metal-organic framework-derived carbon (MOFDC) has been studied as a new carbon-based support for a Pd catalyst for electrochemical water-splitting; i.e., the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline medium. The study shows a high increase in the HER activity, in terms of low onset overpotential (onset η = 35 mV vs. RHE), high exchange current density (j o,s ≈ 0.22 mA cm-2), high mass activity (j o,m ≈ 59 mA mg-1), high kinetic current (j K ≈ 5-8 mA cm-2) and heterogeneous rate constant (k 0 ≈ 4 × 10-4 cm s-1), which are attributed to the high porosity of MOFDC and contribution from residual Co, while the large Tafel slope (b c = 261 mV dec-1) is ascribed to the high degree of hydrogen adsorption onto polycrystalline Pd as a supplementary reaction step to the suggested Volmer-Heyrovsky mechanism. These values for the catalyst are comparable to or better than many recent reports that adopted nano-carbon materials and/or use bi- or ternary Pd-based electrocatalysts for the HER. The improved HER activity of Pd/MOFDC is associated with the positive impact of MOFDC and residual Co on the Pd catalyst (i.e., low activation energy, E A ≈ 12 kJ mol-1) which allows for easy desorption of the Hads to generate hydrogen. Moreover, Pd/MOFDC displays better OER activity than its analogue, with lower onset η (1.29 V vs. RHE) and b a (≈78 mV dec-1), and higher current response (ca. 18 mA cm-2). Indeed, this study provides a new strategy of designing and synthesizing MOFDC with physico-chemical features for Pd-based electrocatalysts that will allow for efficient electrochemical water-splitting processes.
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Affiliation(s)
- Adewale K Ipadeola
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, PO Wits Johannesburg 2050 South Africa +27 11 717 6730
| | - Kenneth I Ozoemena
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand Private Bag 3, PO Wits Johannesburg 2050 South Africa +27 11 717 6730
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9
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Investigations on Forming Ether Coated Iron Nanoparticle Materials by First-Principle Calculations and Molecular Dynamic Simulations. COATINGS 2019. [DOI: 10.3390/coatings9060395] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The mechanism of coating effects between ether molecules and iron (Fe) nanoparticles was generally estimated using first-principle calculations and molecular dynamic (MD) simulations coupling with Fe (110) crystal layers and sphere models. In the present work, the optimized adsorption site and its energy were confirmed. The single sphere model in MD simulations was studied for typical adsorption behaviors, and the double sphere model was built to be more focused on the gap impact between two particles. In those obtained results, it is demonstrated that ether molecules were prone to be adsorbed on the long bridge site of the Fe (110) crystal while comparing with other potential sites. Although the coating was not completely uniform at early stages, the formation of ether layer ended up being equilibrated finally. Accompanied with charge transfer, those coated ether molecules exerted much binding force on the shell Fe atoms. Additionally, when free ether molecules were close to the gap between two nanoparticles, they were found to come under double adsorption effects. Although this effect might not be sufficient to keep them adsorbed, the movement of these ether molecules were hindered to some extent.
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da S. Melo IEM, de Sousa SAA, dos S. Pereira LN, Oliveira JM, Castro KPR, Costa JCS, de Moura EM, de Moura CVR, Garcia MAS. Au−Pd Selectivity‐switchable Alcohol‐oxidation Catalyst: Controlling the Duality of the Mechanism using a Multivariate Approach. ChemCatChem 2019. [DOI: 10.1002/cctc.201900512] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Itaciara E. M. da S. Melo
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Samuel A. A. de Sousa
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Laíse N. dos S. Pereira
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Jefferson M. Oliveira
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Karla P. R. Castro
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Jean C. S. Costa
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Edmilson M. de Moura
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Carla V. R. de Moura
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
| | - Marco A. S. Garcia
- Chemistry DepartmentFederal University of Piauí Campus Universitário Ministro Petrônio Portella 64049-550 Teresina PI Brazil
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Pašti IA, Fako E, Dobrota AS, López N, Skorodumova NV, Mentus SV. Atomically Thin Metal Films on Foreign Substrates: From Lattice Mismatch to Electrocatalytic Activity. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04236] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Igor A. Pašti
- University of Belgrade, Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
- Department of Materials Science and Engineering, School of Industrial Engineering and Management, KTH−Royal Institute of Technology, Brinellvägen 23, 100 44 Stockholm, Sweden
| | - Edvin Fako
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Tarragona, Spain
| | - Ana S. Dobrota
- University of Belgrade, Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Núria López
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Tarragona, Spain
| | - Natalia V. Skorodumova
- Department of Materials Science and Engineering, School of Industrial Engineering and Management, KTH−Royal Institute of Technology, Brinellvägen 23, 100 44 Stockholm, Sweden
- Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, Sweden
| | - Slavko V. Mentus
- University of Belgrade, Faculty of Physical Chemistry, Studentski trg 12-16, 11158 Belgrade, Serbia
- Serbian Academy of Sciences and Arts, Knez Mihajlova 35, 11000 Belgrade, Serbia
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12
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Sarkar S, Peter SC. An overview on Pd-based electrocatalysts for the hydrogen evolution reaction. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00042e] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The electrochemical hydrogen evolution reaction (HER) is a well-studied reaction which involves the reduction of protons for hydrogen production. Pd-based compounds are expected to have activity on par with or better than the expensive state-of-the-art Pt and can be considered as the future materials for the HER.
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Affiliation(s)
- Shreya Sarkar
- New Chemistry Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore
- India
- School of Advanced Materials
| | - Sebastian C. Peter
- New Chemistry Unit
- Jawaharlal Nehru Centre for Advanced Scientific Research
- Bangalore
- India
- School of Advanced Materials
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13
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Vasić M, Čebela M, Pašti I, Amaral L, Hercigonja R, Santos DM, Šljukić B. Efficient hydrogen evolution electrocatalysis in alkaline medium using Pd-modified zeolite X. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2017.11.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Fako E, Dobrota AS, Pašti IA, López N, Mentus SV, Skorodumova NV. Lattice mismatch as the descriptor of segregation, stability and reactivity of supported thin catalyst films. Phys Chem Chem Phys 2018; 20:1524-1530. [DOI: 10.1039/c7cp07276g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Surface properties of supported bimetallic films can be predicted from the lattice mismatch between the overlayer and the support already there for trilayers.
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Affiliation(s)
- Edvin Fako
- Faculty of Physical Chemistry, University of Belgrade
- 11158 Belgrade
- Serbia
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology
- 43007 Tarragona
| | - Ana S. Dobrota
- Faculty of Physical Chemistry, University of Belgrade
- 11158 Belgrade
- Serbia
| | - Igor A. Pašti
- Faculty of Physical Chemistry, University of Belgrade
- 11158 Belgrade
- Serbia
- Department of Materials Science and Engineering, School of Industrial Engineering and Management, KTH – Royal Institute of Technology
- 100 44 Stockholm
| | - Núria López
- Institute of Chemical Research of Catalonia, ICIQ, The Barcelona Institute of Science and Technology
- 43007 Tarragona
- Spain
| | - Slavko V. Mentus
- Faculty of Physical Chemistry, University of Belgrade
- 11158 Belgrade
- Serbia
- Serbian Academy of Sciences and Arts
- 11000 Belgrade
| | - Natalia V. Skorodumova
- Department of Physics and Astronomy, Uppsala University
- 751 20 Uppsala
- Sweden
- Department of Materials Science and Engineering, School of Industrial Engineering and Management, KTH – Royal Institute of Technology
- 100 44 Stockholm
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15
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Jang JS, Qiao S, Choi SJ, Jha G, Ogata AF, Koo WT, Kim DH, Kim ID, Penner RM. Hollow Pd-Ag Composite Nanowires for Fast Responding and Transparent Hydrogen Sensors. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39464-39474. [PMID: 28937737 DOI: 10.1021/acsami.7b10908] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Pd based alloy materials with hollow nanostructures are ideal hydrogen (H2) sensor building blocks because of their double-H2 sensing active sites (interior and exterior side of hollow Pd alloy) and fast response. In this work, for the first time, we report a simple fabrication process for preparing hollow Pd-Ag alloy nanowires (Pd@Ag HNWs) by using the electrodeposition of lithographically patterned silver nanowires (NWs), followed by galvanic replacement reaction (GRR) to form palladium. By controlling the GRR time of aligned Ag NWs within an aqueous Pd2+-containing solution, the compositional transition and morphological evolution from Ag NWs to Pd@Ag HNWs simultaneously occurred, and the relative atomic ratio between Pd and Ag was controlled. Interestingly, a GRR duration of 17 h transformed Ag NWs into Pd@Ag HNWs that showed enhanced H2 response and faster sensing response time, reduced 2.5-fold, as compared with Ag NWs subjected to a shorter GRR period of 10 h. Furthermore, Pd@Ag HNWs patterned on the colorless and flexible polyimide (cPI) substrate showed highly reversible H2 sensing characteristics. To further demonstrate the potential use of Pd@Ag HNWs as sensing layers for all-transparent, wearable H2 sensing devices, we patterned the Au NWs perpendicular to Pd@Ag HNWs to form a heterogeneous grid-type metallic NW electrode which showed reversible H2 sensing properties in both bent and flat states.
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Affiliation(s)
| | - Shaopeng Qiao
- Department of Physics, University of California at Irvine , Irvine, California 92697, United States
| | | | - Gaurav Jha
- Department of Chemistry, University of California at Irvine , Irvine, California 92697, United States
| | - Alana F Ogata
- Department of Chemistry, University of California at Irvine , Irvine, California 92697, United States
| | | | | | | | - Reginald M Penner
- Department of Chemistry, University of California at Irvine , Irvine, California 92697, United States
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Kim JH, Wu P, Kim HW, Kim SS. Highly Selective Sensing of CO, C6H6, and C7H8 Gases by Catalytic Functionalization with Metal Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2016; 8:7173-83. [PMID: 26947256 DOI: 10.1021/acsami.6b01116] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We have fabricated multiple networked SnO2 nanowires and subsequently decorated them with uniformly distributed metal nanoparticles (NPs). The sensing tests indicated that the Pt-, Pd-, and Au-decorated SnO2 nanowires exhibited excellent sensing behavior, specifically for C7H8, C6H6, and CO gases, respectively. We discussed the associated sensing mechanisms in regard to the selective catalytic effects of metal NPs. In addition, by means of d-band theory, we explained the catalytic capabilities of each metal and proposed design principles for exploring new catalytic metals. The present study will pave the way for further development of high-selectivity sensors.
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Affiliation(s)
- Jae-Hun Kim
- Department of Materials Science and Engineering, Inha University , Incheon 402-751, Republic of Korea
| | - Ping Wu
- Entropic Interface Group, Singapore University of Technology & Design , Singapore 487372, Singapore
| | - Hyoun Woo Kim
- Division of Materials Science and Engineering, Hanyang University , Seoul 133-791, Republic of Korea
| | - Sang Sub Kim
- Department of Materials Science and Engineering, Inha University , Incheon 402-751, Republic of Korea
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17
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Raoof JB, Hosseini SR, Rezaee S. A simple and effective route for preparation of platinum nanoparticle and its application for electrocatalytic oxidation of methanol and formaldehyde. J Mol Liq 2015. [DOI: 10.1016/j.molliq.2015.10.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Todoroki N, Yokota N, Nakahata S, Nakamura H, Wadayama T. Electrochemical Reduction of CO2 on Ni- and Pt-Epitaxially Grown Cu(111) Surfaces. Electrocatalysis (N Y) 2015. [DOI: 10.1007/s12678-015-0286-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Hydrogen oxidation reaction on Pd(111) electrode in alkaline media: Ab-initio DFT study of OH effects. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.03.026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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20
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Putungan DB, Lin SH, Kuo JL. A first-principles examination of conducting monolayer 1T′-MX2(M = Mo, W; X = S, Se, Te): promising catalysts for hydrogen evolution reaction and its enhancement by strain. Phys Chem Chem Phys 2015; 17:21702-8. [DOI: 10.1039/c5cp03799a] [Citation(s) in RCA: 100] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We investigated the application of 1T′-MX2(M = Mo, W; X = S, Se, Te) 2D materials as hydrogen evolution reaction (HER) catalysts using density functional theory.
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Affiliation(s)
- Darwin Barayang Putungan
- Department of Physics
- National Taiwan University
- Taipei
- Taiwan
- TIGP Nanoscience and Technology Program
| | - Shi-Hsin Lin
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei
- Taiwan
| | - Jer-Lai Kuo
- Institute of Atomic and Molecular Sciences
- Academia Sinica
- Taipei
- Taiwan
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Sarkar S, Sampath S. Equiatomic ternary chalcogenide: PdPS and its reduced graphene oxide composite for efficient electrocatalytic hydrogen evolution. Chem Commun (Camb) 2014; 50:7359-62. [DOI: 10.1039/c4cc02364a] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The PdPS–rGO composite is an excellent catalyst for HER.
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Affiliation(s)
- Sujoy Sarkar
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560012, India
| | - Srinivasan Sampath
- Department of Inorganic and Physical Chemistry
- Indian Institute of Science
- Bangalore-560012, India
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22
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23
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Zulke AA, Matos R, Pereira EC. Metallic multilayered films electrodeposited over titanium as catalysts for methanol electro-oxidation. Electrochim Acta 2013. [DOI: 10.1016/j.electacta.2013.05.027] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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